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  Pre-Release

  mirror released this 2026-04-13 13:39:11 +00:00 | 69 commits to main since this release

  📅 Originally published on GitHub: Mon, 13 Apr 2026 13:39:56 GMT
  🏷️ Git tag created: Mon, 13 Apr 2026 13:39:11 GMT

  AERIS-10 50T AGC Bitstream — Hybrid AGC + Timing Fix

  Vivado Build 16 bitstream for the XC7A50T-FTG256 production board. Adds hybrid AGC (FPGA inner loop) with 5 new host registers (0x28–0x2C) and a 45x timing margin improvement over the previous build.

  Timing

  Metric	Value
  WNS	+0.045 ns
  WHS	+0.058 ns
  WPWS	+0.361 ns
  Failing Endpoints	0
  All constraints met	Yes

  Utilization (xc7a50tftg256-2)

  Resource	Used	Available	Util%
  LUTs	10,235	32,600	31.4%
  Flip-Flops	12,729	65,200	19.5%
  BRAM	17.5	75	23.3%
  DSP48E1	112	120	93.3%
  IOB	82	170	48.2%

  What Changed (from v1.0.0-ft2232h)

  • AGC Phase 1: rx_gain_control.v rewritten — per-frame peak/saturation tracking, auto-shift with attack/decay/holdoff, signed gain ±7 (±42 dB)
  • AGC Phase 2: New registers 0x28–0x2C (agc_enable, agc_target, agc_attack, agc_decay, agc_holdoff) in radar_system_top.v
  • AGC Phase 3: status_words[4] carries AGC metrics (gain, peak magnitude, saturation count, enable). DIG_5 GPIO (H11) outputs saturation flag for STM32 outer loop. Both USB interfaces (FT601 + FT2232H) updated.
  • Timing fix: CIC max_fanout 4→16, +200 ps setup uncertainty on 400 MHz domain, ExtraNetDelay_high placement + AggressiveExplore routing
  • GUI Phase 6: AGC opcodes + status parsing in radar_protocol.py. AGC control groups in both tkinter and V7 PyQt dashboards. 11 new AGC tests.
  • Cross-layer: AGC opcodes/defaults/status assertions added. contract_parser.py comment-stripping fix.
  • CI: 157 tests passing (103 Python GUI + 25 FPGA iverilog + 29 cross-layer)

  Assets

  • radar_system_top_50t.bit — Production bitstream (program via Vivado/xsdb)
  • 02_timing_summary.rpt — Post-route timing report
  • 04_utilization.rpt — Post-route utilization report

  Build Environment

  • Vivado 2025.2 (lin64)
  • Device: xc7a50tftg256-2 (speed grade -2, PRODUCTION)
  • Top module: radar_system_top_50t

  Downloads

  • 02_timing_summary.rpt
    99 KiB

    2026-04-19 11:27:47 +00:00
  • 04_utilization.rpt
    12 KiB

    2026-04-19 11:27:48 +00:00
  • radar_system_top_50t.bit
    2.1 MiB

    2026-04-19 11:27:49 +00:00
  • Source Code (ZIP)
  • Source Code (TAR.GZ)